dojo.provide("dojox.validate.regexp");

dojo.require("dojo.regexp"); 

// *** Regular Expression Generator does not entirely live here ***
// FIXME: is this useful enough to be in /dojox/regexp/_base.js, or
// should it respect namespace and be dojox.validate.regexp?
// some say a generic regexp to match zipcodes and urls would be useful
// others would say it's a spare tire. 
dojox.regexp = { ca: {}, us: {} }; 

dojox.regexp.tld = function(/*Object?*/flags){
	// summary: Builds a RE that matches a top-level domain
	//
	// flags:
	//    flags.allowCC  Include 2 letter country code domains.  Default is true.
	//    flags.allowGeneric  Include the generic domains.  Default is true.
	//    flags.allowInfra  Include infrastructure domains.  Default is true.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(typeof flags.allowCC != "boolean"){ flags.allowCC = true; }
	if(typeof flags.allowInfra != "boolean"){ flags.allowInfra = true; }
	if(typeof flags.allowGeneric != "boolean"){ flags.allowGeneric = true; }

	// Infrastructure top-level domain - only one at present
	var infraRE = "arpa";

	// Generic top-level domains RE.
	var genericRE = 
		"aero|biz|com|coop|edu|gov|info|int|mil|museum|name|net|org|pro|travel|xxx|jobs|mobi|post";
	
	// Country Code top-level domains RE
	var ccRE = 
		"ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|" +
		"bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|" +
		"ec|ee|eg|er|eu|es|et|fi|fj|fk|fm|fo|fr|ga|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|"
		+
		"gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kr|kw|ky|kz|" +
		"la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|" +
		"my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|" +
		"re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sk|sl|sm|sn|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|" +
		"tn|to|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw";

	// Build top-level domain RE
	var a = [];
	if(flags.allowInfra){ a.push(infraRE); }
	if(flags.allowGeneric){ a.push(genericRE); }
	if(flags.allowCC){ a.push(ccRE); }

	var tldRE = "";
	if (a.length > 0) {
		tldRE = "(" + a.join("|") + ")";
	}

	return tldRE; // String
}

dojox.regexp.ipAddress = function(/*Object?*/flags){
	// summary: Builds a RE that matches an IP Address
	//
	// description:
	//  Supports 5 formats for IPv4: dotted decimal, dotted hex, dotted octal, decimal and hexadecimal.
	//  Supports 2 formats for Ipv6.
	//
	// flags  An object.  All flags are boolean with default = true.
	//    flags.allowDottedDecimal  Example, 207.142.131.235.  No zero padding.
	//    flags.allowDottedHex  Example, 0x18.0x11.0x9b.0x28.  Case insensitive.  Zero padding allowed.
	//    flags.allowDottedOctal  Example, 0030.0021.0233.0050.  Zero padding allowed.
	//    flags.allowDecimal  Example, 3482223595.  A decimal number between 0-4294967295.
	//    flags.allowHex  Example, 0xCF8E83EB.  Hexadecimal number between 0x0-0xFFFFFFFF.
	//      Case insensitive.  Zero padding allowed.
	//    flags.allowIPv6   IPv6 address written as eight groups of four hexadecimal digits.
	//	FIXME: ipv6 can be written multiple ways IIRC
	//    flags.allowHybrid   IPv6 address written as six groups of four hexadecimal digits
	//      followed by the usual 4 dotted decimal digit notation of IPv4. x:x:x:x:x:x:d.d.d.d

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(typeof flags.allowDottedDecimal != "boolean"){ flags.allowDottedDecimal = true; }
	if(typeof flags.allowDottedHex != "boolean"){ flags.allowDottedHex = true; }
	if(typeof flags.allowDottedOctal != "boolean"){ flags.allowDottedOctal = true; }
	if(typeof flags.allowDecimal != "boolean"){ flags.allowDecimal = true; }
	if(typeof flags.allowHex != "boolean"){ flags.allowHex = true; }
	if(typeof flags.allowIPv6 != "boolean"){ flags.allowIPv6 = true; }
	if(typeof flags.allowHybrid != "boolean"){ flags.allowHybrid = true; }

	// decimal-dotted IP address RE.
	var dottedDecimalRE = 
		// Each number is between 0-255.  Zero padding is not allowed.
		"((\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])\\.){3}(\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])";

	// dotted hex IP address RE.  Each number is between 0x0-0xff.  Zero padding is allowed, e.g. 0x00.
	var dottedHexRE = "(0[xX]0*[\\da-fA-F]?[\\da-fA-F]\\.){3}0[xX]0*[\\da-fA-F]?[\\da-fA-F]";

	// dotted octal IP address RE.  Each number is between 0000-0377.  
	// Zero padding is allowed, but each number must have at least 4 characters.
	var dottedOctalRE = "(0+[0-3][0-7][0-7]\\.){3}0+[0-3][0-7][0-7]";

	// decimal IP address RE.  A decimal number between 0-4294967295.  
	var decimalRE =  "(0|[1-9]\\d{0,8}|[1-3]\\d{9}|4[01]\\d{8}|42[0-8]\\d{7}|429[0-3]\\d{6}|" +
		"4294[0-8]\\d{5}|42949[0-5]\\d{4}|429496[0-6]\\d{3}|4294967[01]\\d{2}|42949672[0-8]\\d|429496729[0-5])";

	// hexadecimal IP address RE. 
	// A hexadecimal number between 0x0-0xFFFFFFFF. Case insensitive.  Zero padding is allowed.
	var hexRE = "0[xX]0*[\\da-fA-F]{1,8}";

	// IPv6 address RE. 
	// The format is written as eight groups of four hexadecimal digits, x:x:x:x:x:x:x:x,
	// where x is between 0000-ffff. Zero padding is optional. Case insensitive. 
	var ipv6RE = "([\\da-fA-F]{1,4}\\:){7}[\\da-fA-F]{1,4}";

	// IPv6/IPv4 Hybrid address RE. 
	// The format is written as six groups of four hexadecimal digits, 
	// followed by the 4 dotted decimal IPv4 format. x:x:x:x:x:x:d.d.d.d
	var hybridRE = "([\\da-fA-F]{1,4}\\:){6}" + 
		"((\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])\\.){3}(\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])";

	// Build IP Address RE
	var a = [];
	if(flags.allowDottedDecimal){ a.push(dottedDecimalRE); }
	if(flags.allowDottedHex){ a.push(dottedHexRE); }
	if(flags.allowDottedOctal){ a.push(dottedOctalRE); }
	if(flags.allowDecimal){ a.push(decimalRE); }
	if(flags.allowHex){ a.push(hexRE); }
	if(flags.allowIPv6){ a.push(ipv6RE); }
	if(flags.allowHybrid){ a.push(hybridRE); }

	var ipAddressRE = "";
	if(a.length > 0){
		ipAddressRE = "(" + a.join("|") + ")";
	}
	return ipAddressRE; // String
}

dojox.regexp.host = function(/*Object?*/flags){
	// summary: Builds a RE that matches a host
	// description: A host is a named host (A-z0-9_- but not starting with -), a domain name or an IP address, possibly followed by a port number.
	// flags: An object.
	//	  flags.allowNamed Allow a named host for local networks. Default is false.
	//    flags.allowIP  Allow an IP address for hostname.  Default is true.
	//    flags.allowLocal  Allow the host to be "localhost".  Default is false.
	//    flags.allowPort  Allow a port number to be present.  Default is true.
	//    flags in regexp.ipAddress can be applied.
	//    flags in regexp.tld can be applied.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(typeof flags.allowIP != "boolean"){ flags.allowIP = true; }
	if(typeof flags.allowLocal != "boolean"){ flags.allowLocal = false; }
	if(typeof flags.allowPort != "boolean"){ flags.allowPort = true; }
	if(typeof flags.allowNamed != "boolean"){ flags.allowNamed = false; }

	// Domain names can not end with a dash.
	var domainNameRE = "([0-9a-zA-Z]([-0-9a-zA-Z]{0,61}[0-9a-zA-Z])?\\.)+" + dojox.regexp.tld(flags);

	// port number RE
	var portRE = flags.allowPort ? "(\\:\\d+)?" : "";

	// build host RE
	var hostNameRE = domainNameRE;
	if(flags.allowIP){ hostNameRE += "|" +  dojox.regexp.ipAddress(flags); }
	if(flags.allowLocal){ hostNameRE += "|localhost"; }
	if(flags.allowNamed){ hostNameRE += "|^[^-][a-zA-Z0-9_-]*"; }
	return "(" + hostNameRE + ")" + portRE; // String
}

dojox.regexp.url = function(/*Object?*/flags){
	// summary: Builds a regular expression that matches a URL
	//
	// flags: An object
	//    flags.scheme  Can be true, false, or [true, false]. 
	//      This means: required, not allowed, or match either one.
	//    flags in regexp.host can be applied.
	//    flags in regexp.ipAddress can be applied.
	//    flags in regexp.tld can be applied.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(!("scheme" in flags)){ flags.scheme = [true, false]; }

	// Scheme RE
	var protocolRE = dojo.regexp.buildGroupRE(flags.scheme,
		function(q){ if(q){ return "(https?|ftps?)\\://"; } return ""; }
	);

	// Path and query and anchor RE
	var pathRE = "(/([^?#\\s/]+/)*)?([^?#\\s/]+(\\?[^?#\\s/]*)?(#[A-Za-z][\\w.:-]*)?)?";

	return protocolRE + dojox.regexp.host(flags) + pathRE;
}

dojox.regexp.emailAddress = function(/*Object?*/flags){

	// summary: Builds a regular expression that matches an email address
	//
	//flags: An object
	//    flags.allowCruft  Allow address like <mailto:foo@yahoo.com>.  Default is false.
	//    flags in regexp.host can be applied.
	//    flags in regexp.ipAddress can be applied.
	//    flags in regexp.tld can be applied.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if (typeof flags.allowCruft != "boolean") { flags.allowCruft = false; }
	flags.allowPort = false; // invalid in email addresses

	// user name RE - apostrophes are valid if there's not 2 in a row
	var usernameRE = "([\\da-zA-Z]+[-._+&'])*[\\da-zA-Z]+";

	// build emailAddress RE
	var emailAddressRE = usernameRE + "@" + dojox.regexp.host(flags);

	// Allow email addresses with cruft
	if ( flags.allowCruft ) {
		emailAddressRE = "<?(mailto\\:)?" + emailAddressRE + ">?";
	}

	return emailAddressRE; // String
}

dojox.regexp.emailAddressList = function(/*Object?*/flags){
	// summary: Builds a regular expression that matches a list of email addresses.
	//
	// flags: An object.
	//    flags.listSeparator  The character used to separate email addresses.  Default is ";", ",", "\n" or " ".
	//    flags in regexp.emailAddress can be applied.
	//    flags in regexp.host can be applied.
	//    flags in regexp.ipAddress can be applied.
	//    flags in regexp.tld can be applied.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(typeof flags.listSeparator != "string"){ flags.listSeparator = "\\s;,"; }

	// build a RE for an Email Address List
	var emailAddressRE = dojox.regexp.emailAddress(flags);
	var emailAddressListRE = "(" + emailAddressRE + "\\s*[" + flags.listSeparator + "]\\s*)*" + 
		emailAddressRE + "\\s*[" + flags.listSeparator + "]?\\s*";

	return emailAddressListRE; // String
}

dojox.regexp.us.state = function(/*Object?*/flags){
	// summary: A regular expression to match US state and territory abbreviations
	//
	// flags  An object.
	//    flags.allowTerritories  Allow Guam, Puerto Rico, etc.  Default is true.
	//    flags.allowMilitary  Allow military 'states', e.g. Armed Forces Europe (AE).  Default is true.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(typeof flags.allowTerritories != "boolean"){ flags.allowTerritories = true; }
	if(typeof flags.allowMilitary != "boolean"){ flags.allowMilitary = true; }

	// state RE
	var statesRE = 
		"AL|AK|AZ|AR|CA|CO|CT|DE|DC|FL|GA|HI|ID|IL|IN|IA|KS|KY|LA|ME|MD|MA|MI|MN|MS|MO|MT|" + 
		"NE|NV|NH|NJ|NM|NY|NC|ND|OH|OK|OR|PA|RI|SC|SD|TN|TX|UT|VT|VA|WA|WV|WI|WY";

	// territories RE
	var territoriesRE = "AS|FM|GU|MH|MP|PW|PR|VI";

	// military states RE
	var militaryRE = "AA|AE|AP";

	// Build states and territories RE
	if(flags.allowTerritories){ statesRE += "|" + territoriesRE; }
	if(flags.allowMilitary){ statesRE += "|" + militaryRE; }

	return "(" + statesRE + ")"; // String
}

dojox.regexp.ca.postalCode = function(){
	var postalRE =
		"[A-Z][0-9][A-Z] [0-9][A-Z][0-9]";
	return "(" + postalRE + ")";
}

dojox.regexp.ca.province = function(){
	// summary: a regular expression to match Canadian Province Abbreviations
	var stateRE = 
		"AB|BC|MB|NB|NL|NS|NT|NU|ON|PE|QC|SK|YT";
	return "(" + statesRE + ")";
}

dojox.regexp.numberFormat = function(/*Object?*/flags){
	// summary: Builds a regular expression to match any sort of number based format
	// description:
	//  Use this method for phone numbers, social security numbers, zip-codes, etc.
	//  The RE can match one format or one of multiple formats.
	//
	//  Format
	//    #        Stands for a digit, 0-9.
	//    ?        Stands for an optional digit, 0-9 or nothing.
	//    All other characters must appear literally in the expression.
	//
	//  Example   
	//    "(###) ###-####"       ->   (510) 542-9742
	//    "(###) ###-#### x#???" ->   (510) 542-9742 x153
	//    "###-##-####"          ->   506-82-1089       i.e. social security number
	//    "#####-####"           ->   98225-1649        i.e. zip code
	//
	// flags:  An object
	//    flags.format  A string or an Array of strings for multiple formats.

	// assign default values to missing paramters
	flags = (typeof flags == "object") ? flags : {};
	if(typeof flags.format == "undefined"){ flags.format = "###-###-####"; }

	// Converts a number format to RE.
	var digitRE = function(format){
		// escape all special characters, except '?'
		format = dojo.regexp.escapeString(format, "?");

		// Now replace '?' with Regular Expression
		format = format.replace(/\?/g, "\\d?");

		// replace # with Regular Expression
		format = format.replace(/#/g, "\\d");

		return format; // String
	};

	// build RE for multiple number formats
	return dojo.regexp.buildGroupRE(flags.format, digitRE); //String
}
